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Discussion Starter #1
Can anyone recommend a company that makes replacement water radiators for ST4, mine has been condemned as irrepairable
Thanks.
 

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Discussion Starter #4
Thanks Beemer, but I'm convinced that rads deteriorate with age not use especially on bikes that have stood for a while like mine before I bought it in 2007, so I'm after a company maybe in the states who make copies, I've seen a few for the 916 but not ST4/3/4s and those do not have the intergral radiator cap.
Thanks again
Brad
 

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Just throwing out a thought, and it may not work with your "urgent" timeline, but have you reached out to any of the Hot Rod radiator manufacturers, like Walker, to see if they could rebuild it?

What about yours has been called irreparable?
 

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Discussion Starter #6
Hi,
The company in Malaga Spain are known for reparing classic cars etc radiators and the said the aluminium was "eaten away and failed a cold pressure test so would be useless under hot working pressures.
They said do not throw money away on this, try to get a new copy if it's treu that OEM ones cost hundreds of €/$ And blow me I did see a website last year when I was thinking of replacwement and cant for love or money find it again. I find it hard to beleive that none of you guys haven't had to do the same, am I asking in the wrong place as i've only just rejoined Ducati.ms
Thanks Mate
 

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Thanks Beemer, but I'm convinced that rads deteriorate with age not use especially on bikes that have stood for a while like mine before I bought it in 2007, so I'm after a company maybe in the states who make copies, I've seen a few for the 916 but not ST4/3/4s and those do not have the intergral radiator cap.
Thanks again
Brad

You're convinced.. based on what? Corrosion is only based on chemical interactions - what fluid has been run through it. if coolant mixed with distilled water, its all good. Atmospheric issues would be a non-factor, barring stupidity in cleaning chemicals or the like.

As for knock-offs: These bikes aren't Toyotas, man. that rad is specialized based on the unique fairings and hose routing. Even a 996 rad won't fit without surgery on its spigots.. I did that one once, using a very talented Alfa/Ferrari mechanic who loves Ducatis. Did it strictly as a favor. A proper rad shop may be able to mod one for you, but its tricky, thin wall alum, spigot angles must be "just so." The [expensive] race rads were never made for your sport touring bike as afar as I know. Why would they have been? non-track-designed, not a homologation machine, low numbers produced & on the road.
 

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Hi,
The company in Malaga Spain are known for reparing classic cars etc radiators and the said the aluminium was "eaten away and failed a cold pressure test so would be useless under hot working pressures.
They said do not throw money away on this, try to get a new copy if it's treu that OEM ones cost hundreds of €/$ And blow me I did see a website last year when I was thinking of replacwement and cant for love or money find it again. I find it hard to beleive that none of you guys haven't had to do the same, am I asking in the wrong place as i've only just rejoined Ducati.ms
Thanks Mate
My friend has a radiator from his 2002 ST4s that he's parting out. Not sure what he want$ for it.
 

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Hi,
...try to get a new copy if it's treu that OEM ones cost hundreds of €/$ And blow me I did see a website last year when I was thinking of replacwement and cant for love or money find it again. I find it hard to beleive that none of you guys haven't had to do the same, am I asking in the wrong place as i've only just rejoined Ducati.ms
Thanks Mate
sounds like a car radiator shop - ignorant of what's out there for low production Italian bikes. there are NO reproduction rads for ST-series bikes Ive seen. Get a low mileage used OEM item on eBay for a few quid, or go to Alibaba for your cheap knock-off.. and be sure to let us know how that works out, mate!
 

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but I'm convinced that rads deteriorate with age not use especially on bikes that have stood for a while
Yeah...not a problem as long as there is not a problem with what is being put inside. I have been working on Ducati's as a pro for 21 years now and i have never seen a Ducati radiator that rotted to death. crash damage and holes from debris yes but those both were easily repaired. this is simply not a normal problem sio I would get a different opinion from a reputable ducati service center in your area.

If you are looking for a repair of yours try these guys https://www.motorcycleradiators.com/ as they do amazing work.

My only issue is you should be able to buy a good used radiator for your bike much closer to home and if you use a proper coolant it should last the life of the bike. Keep in mind you want a low silicate coolant, it should be right on the bottle.
 
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